354485740247 has 4 divisors (see below), whose sum is σ = 369898163760. Its totient is φ = 339073316736.

The previous prime is 354485740243. The next prime is 354485740261. The reversal of 354485740247 is 742047584453.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 354485740247 - 2² = 354485740243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354485740241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7706211722 + ... + 7706211767.

It is an arithmetic number, because the mean of its divisors is an integer number (92474540940).

Almost surely, 2^354485740247 is an apocalyptic number.

354485740247 is a deficient number, since it is larger than the sum of its proper divisors (15412423513).

354485740247 is a wasteful number, since it uses less digits than its factorization.

354485740247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15412423512.

The product of its (nonzero) digits is 15052800, while the sum is 53.

The spelling of 354485740247 in words is "three hundred fifty-four billion, four hundred eighty-five million, seven hundred forty thousand, two hundred forty-seven".